Merge "[ElmSharp] Fix Image.ImageObject refresh issue"
[platform/core/csapi/tizenfx.git] / src / Tizen.NUI / src / internal / SlotObserver.cs
1 /** Copyright (c) 2017 Samsung Electronics Co., Ltd.
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 *
15 */
16 using System;
17 using System.Runtime.InteropServices;
18 using System.ComponentModel;
19
20 namespace Tizen.NUI
21 {
22     //Please do not use! this will be internal
23     [EditorBrowsable(EditorBrowsableState.Never)]
24     public class SlotObserver : global::System.IDisposable
25     {
26         private global::System.Runtime.InteropServices.HandleRef swigCPtr;
27         protected bool swigCMemOwn;
28
29         internal SlotObserver(global::System.IntPtr cPtr, bool cMemoryOwn)
30         {
31             swigCMemOwn = cMemoryOwn;
32             swigCPtr = new global::System.Runtime.InteropServices.HandleRef(this, cPtr);
33         }
34
35         internal static global::System.Runtime.InteropServices.HandleRef getCPtr(SlotObserver obj)
36         {
37             return (obj == null) ? new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero) : obj.swigCPtr;
38         }
39
40         //A Flag to check who called Dispose(). (By User or DisposeQueue)
41         private bool isDisposeQueued = false;
42         //A Flat to check if it is already disposed.
43         protected bool disposed = false;
44
45
46         ~SlotObserver()
47         {
48             if (!isDisposeQueued)
49             {
50                 isDisposeQueued = true;
51                 DisposeQueue.Instance.Add(this);
52             }
53         }
54
55         public void Dispose()
56         {
57             //Throw excpetion if Dispose() is called in separate thread.
58             if (!Window.IsInstalled())
59             {
60                 throw new System.InvalidOperationException("This API called from separate thread. This API must be called from MainThread.");
61             }
62
63             if (isDisposeQueued)
64             {
65                 Dispose(DisposeTypes.Implicit);
66             }
67             else
68             {
69                 Dispose(DisposeTypes.Explicit);
70                 System.GC.SuppressFinalize(this);
71             }
72         }
73
74         protected virtual void Dispose(DisposeTypes type)
75         {
76             if (disposed)
77             {
78                 return;
79             }
80
81             if (type == DisposeTypes.Explicit)
82             {
83                 //Called by User
84                 //Release your own managed resources here.
85                 //You should release all of your own disposable objects here.
86
87             }
88
89             //Release your own unmanaged resources here.
90             //You should not access any managed member here except static instance.
91             //because the execution order of Finalizes is non-deterministic.
92
93             if (swigCPtr.Handle != global::System.IntPtr.Zero)
94             {
95                 if (swigCMemOwn)
96                 {
97                     swigCMemOwn = false;
98                     NDalicPINVOKE.delete_SlotObserver(swigCPtr);
99                 }
100                 swigCPtr = new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero);
101             }
102
103             disposed = true;
104         }
105
106
107         public virtual void SlotDisconnected(SWIGTYPE_p_Dali__CallbackBase callback)
108         {
109             NDalicPINVOKE.SlotObserver_SlotDisconnected(swigCPtr, SWIGTYPE_p_Dali__CallbackBase.getCPtr(callback));
110             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
111         }
112
113     }
114
115 }